remcos | d18b39b5ee863d8274e7e9a53b5df6300bc1b01e3d62f3fa59c6a63a79389cce

General

Target

Quotation.exe
Size

1.3MB
MD5

e977a5a34debb3c0d149c501a79e1c26
SHA1

a56bf47f641e37dc4c5cd071d8ffe93400161b75
SHA256

ac0c3e2880e025ddba8da36cd191b666b9dc88b120a74c3357386ad5e766f747
SHA512

570352094bd0bf801da20bb9e37034556a64d81ad2dcb20db5ee79c9bd7799833e580f55fff2afa5258f606e349f7c4713071e5846d5b1d857a7d74c622f1139
SSDEEP

24576:Fu6J33O0c+JY5UZ+XC0kGso6FasxjKI1T1GpUQ7M3UF4KvcKlWY:Hu0c++OCvkGs9Fasx/1Tkpn7ME9viY

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

196.251.86.41:2404

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-83VOGC
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\unspattered.vbs	unspattered.exe

Executes dropped EXE 1 IoCs

pid	Process
4836	unspattered.exe

AutoIT Executable 1 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/files/0x0014000000023fa0-9.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4836 set thread context of 6060	4836	unspattered.exe	94

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	unspattered.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Quotation.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4836	unspattered.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
5436	Quotation.exe
5436	Quotation.exe
4836	unspattered.exe
4836	unspattered.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
5436	Quotation.exe
5436	Quotation.exe
4836	unspattered.exe
4836	unspattered.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 5436 wrote to memory of 4836	5436	Quotation.exe	89
PID 5436 wrote to memory of 4836	5436	Quotation.exe	89
PID 5436 wrote to memory of 4836	5436	Quotation.exe	89
PID 4836 wrote to memory of 6060	4836	unspattered.exe	94
PID 4836 wrote to memory of 6060	4836	unspattered.exe	94
PID 4836 wrote to memory of 6060	4836	unspattered.exe	94
PID 4836 wrote to memory of 6060	4836	unspattered.exe	94

C:\Users\Admin\AppData\Local\Temp\Quotation.exe
"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:5436
- C:\Users\Admin\AppData\Local\alarmingness\unspattered.exe
  "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:4836
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\Quotation.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:6060

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\alarmingness\unspattered.exe

Filesize
1.3MB

MD5
e977a5a34debb3c0d149c501a79e1c26

SHA1
a56bf47f641e37dc4c5cd071d8ffe93400161b75

SHA256
ac0c3e2880e025ddba8da36cd191b666b9dc88b120a74c3357386ad5e766f747

SHA512
570352094bd0bf801da20bb9e37034556a64d81ad2dcb20db5ee79c9bd7799833e580f55fff2afa5258f606e349f7c4713071e5846d5b1d857a7d74c622f1139

Download Submit
memory/4836-18-0x0000000001920000-0x0000000001D20000-memory.dmp

Filesize
4.0MB

Download
memory/5436-6-0x0000000001340000-0x0000000001740000-memory.dmp

Filesize
4.0MB

Download
memory/6060-34-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-37-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-22-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-23-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-25-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-24-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-26-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-27-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-28-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-31-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-32-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-33-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-20-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-35-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-36-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-21-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-38-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-39-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-40-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-41-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-42-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-43-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-44-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-45-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-46-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-47-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-48-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-49-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/6060-50-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download

Analysis

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